SE467345B

SE467345B - Device for grinding drive links and saw bars of saw chains, comprising guide groove and support for correct grinding

Info

Publication number: SE467345B
Application number: SE9003506A
Authority: SE
Inventors: Arne Larsson; Erik Persson
Original assignee: Arne Larsson; Erik Persson
Priority date: 1990-11-02
Filing date: 1990-11-02
Publication date: 1992-07-06
Also published as: SE9003506D0; SE9003506L

Abstract

Device for grinding at least the drive links of saw chains, which device comprises grinding wheels disposed on a spindle of the grinding machine, two grinding wheels being spaced at a distance apart corresponding to the thickness of the drive links. According to the invention, a bearing surface 23 is disposed externally around at least part of the periphery of the two grinding wheels 8, which bearing surface is configured to support the saw chain 25 and has a guide groove 24 for the drive links 26 of the saw chain, this guide groove having a width at least equal to the distance between the grinding wheels 8 and lying in the radial direction externally around the grinding wheels 8 and their interspace, further to which the guide groove 24 is continuous along at least that part of the bearing surface 23 which lies closest to the peripheral parts of the grinding wheels and which in the radial direction has relatively small thickness to allow the drive links 26 of the saw chain to pass between the grinding wheels 8 for grinding whenever there is movement of the chain relative to the said bearing surface 23. <IMAGE>

Description

15 20 25 30 35 '40 46 7 545 koLventionell slipskiva 5 med slipstöd 6 och skyddsglas 7. i Slipanordningen enligt denna uppfinning innefattar ett par slipskivor 8 som är anordnade pá ett inbördes avstånd från varandra som är like med, väsentligen lika med eller något större änltjockleken hos den eller de ságkedjors 25 drivlänkar 26 som skall slipas och för att nämnda avstånd mellan slipskivorna 8 alltid skall bli det avsedda används distansringar 9 i ett antal som erfordras för att täcka upp pá marknaden förekommande driv- länktjooklekar. Distansringarna 9 år märkta med avsedd tjocklek och därmed är det mycket enkelt att inställa och erhålla korrekt avstånd mellan slipskivorna Q. Slipskivorna 8 kläms fast i avsedda lägen på slipmaskinens spindel med hjälp av distansringar eller -brickor 10 och en pa spindelns gängade endparti befintlig laïmutter 11. 15 20 25 30 35 '40 46 7 545 conventional grinding wheel 5 with grinding support 6 and protective glass 7. The grinding device according to this invention comprises a pair of grinding wheels 8 which are arranged at a mutual distance from each other which are equal to, substantially equal to or slightly larger the end thickness of the drive links 26 of the saw chain or chains 25 to be ground and in order for the said distance between the grinding wheels 8 to always be the intended use, spacer rings 9 are used in a number required to cover the drive link jooks available on the market. The spacer rings 9 are marked with the intended thickness and thus it is very easy to set and obtain the correct distance between the grinding wheels Q. The grinding wheels 8 are clamped in intended positions on the spindle of the grinding machine by means of spacer rings or washers 10 and an adhesive nut 11 on the spindle threaded end. .

Omkring de bada slipskivorna 8 är anordnad en bärring 12 sagkedjorna under slipning och denna bärring 12, som även fungerar som skyddsring, är förbunden med maskinstativet 13 under spindeln 2 genom att vara fastspänd eller -klämd mellan en inre, mot maskinstativet 13 anliggande klämplatta 14 och en yttre mot banringen 12 anliggande tryokplatta 15 med hjälp av ett par gedomgàende bultar 16 som sträcker sig in i gangade hål i ma kinstativet 13 och är inskruvbara i dessa för àstadkommande av er orderlig fastklämnig av bärringen 12. Denna bärring är vidare faáseaa med en öppning 17 inuti vilken sistnämnda siipskivar s befinner sig och som företrädesvis men inte nödvändigtvis kan vana cirkulär. Skyddsringens cirkulära öppning 17 har sitt oedtrum så förskjutet i förhållande till bärringens centrum, att vid bärringens övre del 19 bildas ett bågparti 20 med minsta möﬂliga tjocklek och korrekt inställda skall slipskivorna 8 med sim periferi befinna sig sa nära som möjligt detta bàgpartis insﬁda 21. Denna inställning möjliggöres tack vare att de hål 22 i bßrringen 12, genom vilka fästbultarna 16 sträcker sig, är avllanga i vertikaiied. varigenom kan sålunda bal-ringen 12 höjas oohšsänkas i förhållande till spindelns rotationsaxel och således inakällas i avsett läge, så att slipskivorna 8 med sin periferi kommer så nära nämnda bagpartis insida 21 som möjligt.Arranged around the two grinding wheels 8 is a support ring 12 the saw chains during grinding and this support ring 12, which also functions as a protective ring, is connected to the machine frame 13 under the spindle 2 by being clamped or clamped between an inner clamping plate 14 and abutting the machine frame 13. an outer pressure plate 15 abutting the web ring 12 by means of a pair of threaded bolts 16 which extend into threaded holes in the machine frame 13 and are screwable therein to provide your proper clamping of the support ring 12. This support ring is further provided with an opening 17 within which the latter sieve discs s are located and which preferably but not necessarily can be used circularly. The circular opening 17 of the protective ring has its oedrum so displaced relative to the center of the bearing ring that at the upper part 19 of the bearing ring an arcuate portion 20 with the smallest possible thickness is formed and correctly set, the grinding wheels 8 with a periphery should be as close as possible to this arcuate 21. adjustment is made possible by the fact that the holes 22 in the bore 12, through which the mounting bolts 16 extend, are elongate in vertical direction. whereby the baling ring 12 can thus be raised and lowered relative to the axis of rotation of the spindle and thus recessed in the intended position, so that the grinding wheels 8 with their periphery come as close to the inside 21 of said rear part as possible.

I Börringen 12 är vidare i sin perifera kantsida 23 försedd mediett styrspàr 24 för ságkedjornas drivlänkar 26, vilket spar skall ha ett djup och en bredd anpassat till drivlänkarna 26 hos denlstörsta ságkedja som slipanordningen är avsedd för och bör I f s för 10 15 20 25 30 35 2 40 467 545 sträcka sig i varje fall över större delen av bärringens övre pe.iferihslva och företrädesvis runt om hela bärringen 12, såsom vidos på ritningarna. Vid bärringens bágparti 20 är styrspáret 24 ge omgående, såsom visas i fig.8, och bildar därstädes ett slﬂpldge för ságkedjors drivlönkar och i vilket sliplage dr länkarna 26 hos en pa bärringens perifera kantsida 23 updhöngd sågkedja 25 sträcker sig in mellan de båda slipskivorna 8 ör att av dessa slipas. Genom att så dra eller förskjuts den pa|bårskivans kantsida 23 upphängda sàgkedjan förbi nämnda slﬂpläge att kedjans samtliga drivlänkar 26 bringas att passera slﬂplaget kommer sålunda drivlänkarns båda sidor att automatiskt re slipas av slipskivorna 8 fran grader och andra ojämnheter som ka förekomma och hindra sàgkedjan från att löpa fritt i sitt svÄrds drivlanks- eller styrspàr och passa in i sitt drivhjul. l Vidare kan, sasom är fallet vid det på ritningarna visade utﬁörandet av uppfinningsföremàlet, i föreliggande slipanordning inäà en slipskiva 27 som har en bredd som ar väsentligen densamma so_ bredden hos ett svärds 35 drivlänksspàr för renslipning av dedsemma när sa erfordras. Härför är den på spindeln mellan dis- taÅsbrickorna 10 fastklamda slipskivan 27 anordnad inuti en urdagning 28 i en skyddsskiva 29 med minst tva genomgående hål 30_ ör förankring med hjälp av fästbultarna 16. Denna skyddsskiva 29 kan i princip ha vilken i sig lämplig form även om det pa rithingarna endast som exempel visas en föredragen form av en tremörnig ring med lika långa sidor och med ett i ett av sina hört vertikalt bildat styrspàr 31, vars botten 32 skall vara bel gen i horisontalplanet och vars bredd skall vara nàgot större än jookleken som de svärd vilkas kedjespár skall rensas.The bearing ring 12 is further provided in its peripheral edge side 23 with a guide guide 24 for the drive links 26 of the saw chains, which groove must have a depth and a width adapted to the drive links 26 of the largest saw chain for which the grinding device is intended and should be Extend in each case over most of the upper surface of the support ring and preferably around the entire support ring 12, as shown in the drawings. At the frame portion 20 of the support ring, the guide groove 24 is immediately provided, as shown in Fig. 8, and there forms a slip for the drive links of saw chains and in which grinding layer the links 26 of a saw chain 25 suspended on the peripheral edge side 23 of the support ring extend between the two grinding wheels 8. to be ground by these. By pulling or displacing the saw chain 23 hung on the edge of the support disc past the said position so that all the drive links 26 of the chain are caused to pass the stroke, both sides of the drive links will thus be automatically sanded by the grinding discs 8 from degrees and other irregularities which may occur. to run freely in the barrel or guide groove of his sword and fit into his drive wheel. Furthermore, as is the case with the embodiment of the object shown in the drawings, in the present grinding device a grinding wheel 27 having a width which is substantially the same as the width of a barrel drive link groove for grinding the same when required may be provided. For this purpose, the grinding wheel 27 clamped on the spindle between the spacer washers 10 is arranged inside a challenge 28 in a protective plate 29 with at least two through holes 30 for anchoring by means of the fastening bolts 16. This protective plate 29 can in principle have any suitable shape even if the drawings show, by way of example only, a preferred form of a triangular ring having equally long sides and having in one of its vertically formed guide grooves 31, the bottom 32 of which shall be located in the horizontal plane and the width of which shall be slightly greater than the yoke. the swords whose chain grooves are to be cleaned.

Stytspdret har sin horisontella botten 32 så belägen i förhål- lanke till slipskivans centrum, att slipskivan 27 monterad pà plats i styrringen 29 sträcker sig upp över styrspàrets botten 32 max malt ett stycke som motsvarar djupet hos svärdets 35 ked_espár 36 som skall renslipas. Själva renslipningen blir tack vare den form anordningen erhållit mycket enkel och tillgàr sa, att|svärdet 35 (fig. l) förs in i styrspàret 31 med slipskivan 27 inskjutande i svärdets kedjespár 36, varefter svärdet, under det attldet hålls anliggande mot styrspàrets botten 32, förskjuts runt så att slipskivan 27 passerar längs efter kedjespàrets 36 helt längd. Noteras skall att pà slipskivans ena sida är stytspàrets botten 32 inte öppen som pá den andra sidan utan 10 15 4 lá* 6 7 3 4 5 he täckt genom en klack 34 och härigenom hindras pá ett enkelt så t svärdet 35 från att glida ned för långt vid rensning av ke jespåret 36 runt svördets spets.The support groove has its horizontal bottom 32 so located relative to the center of the grinding wheel that the grinding wheel 27 mounted in place in the guide ring 29 extends up over the bottom of the guide groove 32 max ground a piece corresponding to the depth of the bar 35 chain groove 36 to be sharpened. Thanks to the shape the device has obtained, the cleaning itself is very simple and ensures that the bar 35 (Fig. 1) is inserted into the guide groove 31 with the grinding wheel 27 projecting into the chain groove 36 of the bar, after which the bar is held against the bottom of the guide groove 32. , displaced around so that the grinding wheel 27 passes along the entire length of the chain cut 36. It should be noted that on one side of the grinding wheel the bottom 32 of the support groove is not open as on the other side but is covered by a lug 34 and is thereby prevented on a simple so that the sword 35 from sliding down for far when cleaning the keel groove 36 around the tip of the sword.

Vid den på ritningarna visade utföringsformen är den yttre tr§okplattan 15 utformad som ett vinkeljärn, vars i förhållande till själva tryokplattan 15 vinkelrätt utskjutande vinkeldel 37 bi dar ett stöd eller stad för tillslipning av svärdets kantpar- tier 38 på bada sidor om kedjespáret 36, såsom illustreras i fig.2. Harför är bärringens utàtvända och i området för stödet 37!be1ägna delar uttagna till ett sådant djup, att slipskivans 8 utåtvanda sida ar belägen nagot utanför dessa urtagna delar vid 39íi fig. 3 och därmed kommer sålunda slipskivan 8 i kontakt med svåraste kancpartier se for tiilsiipning av dessa.In the embodiment shown in the drawings, the outer pressure plate 15 is formed as an angle iron, the angular portion 37 projecting perpendicularly to the pressure plate 15 itself provides a support or city for grinding the edge portions 38 of the sword on both sides of the chain groove 36. as illustrated in Fig. 2. Therefore, the outwardly facing parts of the support ring and in the area of the support 37 are taken out to such a depth that the outwardly facing side of the grinding wheel 8 is located slightly outside these recessed parts in Fig. 3 and thus the grinding wheel 8 comes into contact with the most difficult canal parts. of these.

I Föreliggande uppfinning är inte begränsad till det ovan beskrivna och på ritningarna visade utan kan ändras och modifie- rad på många olika sätt inom ramen för den 1 efterföljande patentkrav definierade uppfinningetanken. __. ____-The present invention is not limited to what is described above and shown in the drawings, but can be changed and modified in many different ways within the scope of the inventive concept defined in the appended claims. __. ____-

Claims

5,467,545 PATENT CLAIMS

Device for grinding at least saw chains drive links, which device comprises grinding wheels arranged on a spindle of a grinding machine, two grinding wheels being located at a distance from each other corresponding to the thickness of the drive links, characterized in that externally if at least a part of the the periphery of the two grinding wheels (8) is provided with a support surface (23) designed to support the saw chain (25) which has a guide groove (24) for the drive links (26) of the saw chain, this guide groove having a width at least equal to the distance between the grinding wheels (8) and are located radially outside the grinding wheels (8) and their spaces, and the guide groove (24) is continuous along at least the part of the bearing surface (23) which is closest to the peripheral parts of the grinding wheels and which has a radially small thickness to allow the drive links (26) of the saw chain to pass between the grinding wheels (8) for grinding during movement of the chain relative to said support surface (23).

Device according to claim 1 for saw chains for chainsaws equipped with saw blades, characterized in that on the same spindle (2) as said grinding wheels (8) a further grinding wheel (27) is arranged which has a width corresponding to the drive link groove of the saw chain ( 36) in a chain supporting saw blade (35), and which with a peripheral part extends a distance corresponding to the depth of said drive link groove over a bottom (32) in a guide groove (29) formed in a protective disc (29) connected to the grinding machine. 31) for the saw value.

Device according to claim 2, characterized in that the one of the grinding wheels (8, 27) which is located at the end of the spindle (2) of the grinding machine has a part of its outwardly facing grinding side exposed for grinding edge portions (38) of the saw blade on either side of the bar's drive link groove (36.

4. A device according to claim 3, characterized in that in the area of said exposed part of said grinding wheel (8 or 27) the unit is a single support (37) for the sword, which support forms a right angle with the radial plane of the grinding wheel.

Device according to one of the preceding claims, characterized in that the support surface (23) supporting the saw chain is constituted by an edge side (23) of a pair of grinding wheels (8) 467 345 at least radially enclosing support ring (12) as in said edge side shows the guide groove (24) for the saw links' drive links.

Device according to Claim 5, characterized in that the support ring (12) having the support surface (23) is connected to the grinding machine (1) below its spindle (2) by means of bolts (16) which extend in the support ring (12). through a vertically elongated hole (22) to obtain an adjustment of the support ring (12) relative to the periphery of the grinding wheel portion at especially the part where the guide groove (24) is continuous.

Device according to any one of claims 4-6, characterized in that said support (37) forms a part of a pressure plate (15) projecting at right angles for anchoring both the support ring (12) and the protective plate (29). at the stand of the grinder using bolts (16).

Device according to one of the preceding claims 2-7, characterized in that on the spindle (2) the further grinding wheel (27) is arranged inside the pair of grinding wheel pairs (8), the different grinding wheels (8, 27) being held relative to one another. separated at a certain distance by spacers (9, 10) arranged on the spindle. 4 .;